Window-screen.



G. H. FORSYTH.

WINDOW SCREEN.

APPLICATION FILED was. l9l6.

Patented July 30, 1918.

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SYIH.

WINDOW SCREEN.

APPLICATION min was. I916.

z suns-sun 2 Patented J 1* 30, 191&

GEORGE H. FOBSYTH, OF CHICAGO, ILLINOIS.

WINDOW-SCREEN.

Application filed August 9, 1916. Serial No. 113,873.

To all whom it may concern:

Be it known that I, GEORGE H. FORSYTH,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented 'certain new and useful Improvements in Window-Screens, of which the following is a specification.

The invention relates particularly to the adaptation of a screen for convenient assembly and use in connection with'the sliding sash of railway cars, by the provision of simple and efficient means enabling the screen to be raised from a lowered operative position covering the window opening when the sash is raised to an elevated inoperative position between the two sashes and above the line of vision through the lower sash.

Heretofore it has been usual to employ a hook or similar device to reach between the two sashes and engage the screen in its ele vated position to pull the same down within reach of the operator, but recognizing the liability of injury to the screen while fishing for it vith the hook, as also the inconvenience attending such manipulation, it has been thought to avoid the necessity of using any extraneous tool in operating the screen, and it is to the accomplishment of this purpose that the present invention is more particularly directed.

Another feature of the invention is the provision of a metalframe for screens which embodies an improved and highly efficient arrangement for securing the wire cloth the frame and for attaching a weather strip l ping thereto.

A further feature is the peculiarly advantageous mounting of the screen look, whereby to enable the same to be readilyremoved from and reassembled with the screen frame.

In order that the invention may be readily understood a preferred embodiment of the same together with modifications of certain portions is set forth in the accompanying drawing and in the detailed description predicated thereon. Obviously, however, the invention is susceptible of embodiment in' other and varied constructional forms without departure-from the spirit and essence thereof, wherefore the drawings and description are to be taken in an illustrative and not i an unnecessarily limiting sense. In the drawings Figure 1 is a front elevation of a window provided with the screen, the same being broken in portions in order toconveniently show the same;

Fig. 2 is a similar view of one side of the window and screen showing the latter in partially lowered position;

Fig. 3 is a fragmentary view of a window 4 frame and screen showing the latter in its lowered position;

Fig. 4 is a detail transverse. sectional view on the line 4-4 of Fig. 3;

- Fig. 5 is a horizontal section taken substantially on the line 55 =of'Fig. 2, but showing the two sashes and the screen frame in substantially the same horizontal relat1on;

Fig. 6 is a partial vertical section through the upper corner of the screen frame showing the mounting of the lock;

Figs. 7,8, 9 and 10 are cross sectional views through the screen frame showing the mounting of the upper weather strip, the lower weather strip and modified forms of screen frame construction.

Having reference to-the drawings more in detail, the upper sash is indicated at 11, the lower sash at 12 andthe screen frame at 13. These sashes are guided in the spaces between thestops 14, 15 and an interme-- the screen frame 13 is received. In order tov provide for the movement :of the screen frame from lwithin the pocket to a position accessible to the operator, a particular form of mounting forthe screen frame is provided which will now be described.

- Upon the stop 16 ateach side .of the window opening is formed, preferably integral therewith, a guide member 17 which, as herein shown, is substantially cylindrical in cross section. These guides 17 extend the full height of the window opening betweeen the upper and lower sashes 11 and 12. Slidably engaging the guides 17 and shoes 18 each of which is so bent as to envelop the cylindrical portion, of the guide in such manner as to prevent'disassociation while permitting of free sliding movement. Each of the shoes 1 has above a terminal flange portion 19 and below a similar flange por- Speciflcation of Letters Patent. Patented J uly 30, 1918.

' provide,

tion 20 projecting inwardly at right angles therefrom to provide a handle for manual manipulation. These shoes 18 are of a length considerably less than the total height of the Window opening and sufliciently greater than the height of the sashes and consequently of the pocket formed between the sashes to project therefrom, as indicated in Fig. 1, thus permitting the flanged terminal portion 20 to be grasped by the operator'when the screen frame is in its uppermost position.

The screen frame is provided on its two vertical edges with a channel to receive the shoe 18, the channel on one side of the screen frame being so arranged as to receive a bow spring 21 which bears on the shoe so as to as is usual, for lateral yielding.

It will be observedthat the left hand guide 17 is in its upper portion provided with a recess 22 having a lower oblique wall and in its lower portion with a recess 23 having an abrupt wall for the reception of the head 24 of the bolt lock, the detailed construction of which will be hereafter more clearly set forth. It will also be observed that the shoe 18 is near-its upper end provided with an aperture 25 into which the material of the shoe is bent at an inclination on the lower side, and at another portion of its length the shoe 18 is provided with an aperture 26 which in the lowered position of the window screen coincides with the recess 23 of the guide. The apertures 25 and 26 serve as a passageway through which the bolt 24 may enter the recesses 22 and 23 of the guide. The recess 23 of the guide having abrupt walls serves to the screen in its lowered position by means of the bolt 24 whereas the recess 22 having a lower oblique wall provides a frictional locking only of the sash and permits the bolt to ride out of the recess upon force being applied in a downwardly direction upon the side frame.

From the above it will be readily apparent that the shoes 18 have a limited sliding movement upon the guides 17 ,such range of movement being less than the total length of the guides, and that in turn the screen frame has a sliding movement upon the .shoes limited only bythe flanged terminal portions 19 and 20.

If now we assume in its uppermost position as shown in Fig. 1, housed entirely within the pocket formed between the upper and lower sash, the handles 20 project from the shoes within easy reach of the operator. He grasps the handles 20 on each side of the window casing and exerts a downward pull. This causes the bolt head 24 to ride out of the recess 22 and to bear on the face of the guide as the screen and shoes move downwardly. This movement continues until the screen frame positively lock the screen frame to be comes within the reach of the operator who then grasps the frame andcontinues the downward pull until the handles 20 of the shoes strike against the window sill snapping over the studs 27 at-the lower ends of the guides. A further pull on' the screen frame causes the bolt head 24 to ride out of the recess 25 onto the surface of the shoe itself and the further downward movement of the screen is independent of the shoes which at this time are stationary. When the bolt 24 reaches the recesses 26 and 23 which are in alinement it snaps through the aperture 26 into the recess 23 and locks the screen against being raised from the outside.

The screen being in the lowered position, the operator takes hold of the same by means of the recessed grip 28 and lifts the frame until its upper edge contacts the flange 19, thereupon the further upward movement of the screen frame disengages the lower flange 20 from the stud 27 and the shoes 18 travel upwardly with the screen frame. As soon as the lower edge of the screen frame passes within the pocket between the elevated sashes the operator transfers his hold to the handles 20 and continues the. upward movement of the frame into the pocket until the upper ends of the shoes bearing the flanges 19 strike the top of the window casing, at which time the bolt 24 will, snap through the aperture 25 in to the recess 22 and frie-- tionally hold the screen in its elevated position entirely within the pockets between the two sashes. It is understood, of course, that before starting the upward movement of the screen the operator will have released the bolts 24 from the recess 23 bypressing outwardly upon the lever handles 29 whereby the bolt head is retracted through the engagement of its slotted pin 30 with the lever arm 31. j

This screen look has particular advantages in that its members may be readily disassociated and removed from the frame and as easily reassembled. The bolt 24 is slidably mounted within the bore 32 and outwardly pressed by means of a compression spring-33 bearing upon thebolt head and-inwardly upon the end of the bore. The stem 30 projects from the bore into the interior of the screen frame andis' slotted at 34 to receive the slightly hooked end of the lever arm 31. If it is desired to remove the bolt for any reason, it is pressed back against the act-ion of the spring 33 and the screw 36 having been removed, the lever 31 is disengaged from the slotted end of the stem and removed through the opening 37 whereupon the bolt 24 andspring 33 may be readily removed from the bore within which they are normally seated. They are re-assembled as easily by a reversal of the operation just described.

I In Fig. 7 is shown a convenient mode of assembling an upper weather stripping in the screen frame. To this end the upper edge of the frame is channeled as indicated in this figure, the rubber stripping 38 is laid across the channel and the T strip 39 is utilized. to press the strip into the channel by means of its stem 40. It will be noted that the stem 40 is made of two portions, resilient in char-- ncter and slightly convex so as to yield when passing through the constricted entrance to the channel to expand therein so as to hold the rubber weather stripping securely in position as clearly indicated in said figure.

In Fig. 8 the lower edge of the screen frame is shownas provided with a longitudinally'extending channel at 41 adapted to receivethe edges of the folded over weather stripping 42, a key 43 being inserted to hold the same frictionally' in place: It will be noted that in the preferred form of construction shown in this figure one side of the channel 41 is slightly corrugated at 44 and the key is provided with a similar corrugation by means of which the rubber strip is forced into the first name I corrugation, thereby presenting additional resistance'to theaccidental dislodgment of the strip.

In Figs. 7, 8, 9' and 10 are illustrated in cross section different forms of metallic frame especially adapted for utilization in the making up of screen frames; In Figs. 7 and 8 the channel 45, in which the netting 46 is clamped by means of the rods 4 has its bottom-portion longitudinally corru ated at 48 whereby to lend an increased esiliency to thewalls of said channel thus per- 'mitting said channel toyield as the rod 47 is forced into the same and thereby attaining a much more eflicient locking of the wire netting within said channel.

In Fig 9 this resiliency: of the channel 45 is imparted by forming another independent channel alongside the channel 45.

his last named channel 48 imparts to the wall intervening between it and the channel 45 a yielding quality which conduces to the secure clamping of the screen cloth.

In Fig. 10 the main body of the screen frame has inserted therein a stiffening member 49 and the thin metal of the frame extends therefrom in an L-projection 50. Between the? terminus thereof and the main wall of the frame is formed a channel 51 the walls of which have great relative resiliency for the secure clampingof the screen cloth 46 by means of the rods 47.

I claim:

1. The combination of a window casing, spaced member's providing a pocket therebetween, guides disposed in line with and en-' tering said pocket, shoes sliding -on said guides and having a range of movement less than the length of the guides, a frame member riding on the shoes and also slidable thereon, the shoes having terminal portions .a length arange of movement less than the guides,j'a

frame member riding on the shoes and also slidable thereon, the shoes having terminal portions forming stops for the frame member,.and releasable means to lock the frame 'to the shoes and the shoes to the guides.

3. The combination of a window casing, horizontally spaced members prov ding a vertical pocket therebetween, vertical guides disposed in line with and entering said pockets, shoes sliding on said guides and having a length greater than the depth of the pocket and a range of movement. less than the length of the guides, a frame member ridin thereon, t e shoes having terminal portions forming stops for the frame member, and releasable means to lock the frame to the shoes and the shoes -to the guides.

4. The combination of a window casing, horizontally spaced members providing a vertical pocket therebetween, vertical guides disposed in line with and entering said pockets, shoes sliding on said guides and having a range of movement less than the ides, a screen frame member riding on t e shoes and also slidable'th'ereon, the shoes having terminal portions f ormi screen frame, and-releasab e means to lock thedframe to the shoes and the shoes to the 5. The combination of a window casing, horizontally spaced members providing a vertical pocket therebetween, vertical guldes disposed inline with and entering said pockets, shoes sliding on said ides and having eater than t e depth of the pocket an a range of movement less than the length of the guides, a screen frame member ridin on the shoes and also slidable thereon, t e shoes having terminal por-,

tions formingstops for the frame member and handles for manual engagement, and releasable means to frictionally lock the frame to the shoes and the shoes to the guides.

6. The combination of a window casing, horizontally spaced members providin a vertical pocket therebetween, vertical guides disposed iniline with and entering said pockets shoes sliding on said guides and having alength greater than the depth of the pocket and a range of movement less than the length of the'guides, a screen frame member riding on the shoes and also slidable thereon, the shoes having terminal portions forming stops for the frame member on the shoes and also slidable stops for this and handles for manual engagement, and releasable means to frictionally lock the frame to the shoes and the shoes to the guides in the upper position of the screen frame and to positively lock the frame to the shoes and the shoes to the guides in the lowered position of the screen frame.

7. The combination of a window casing, horizontally spaced sash members providing a vertical pocket therebetween, vertical guldes disposed in line with and entering said pockets, shoes sliding-on said guides and havin a length greater than the depth of the poo et and a range of movement on the guides less than the length of the guides, a screen frame member riding on the shoes and also slidable thereon, the shoes having terminal laterally extending flanges forming stops for the frame member and handles for manual engagement, means to frictionally lock the shoes to the guides in their lowermost position, and manually releasable means to frictionally lock the frame to the shoes and the shoes to' the guides in the upper position of the shoes and frame and to positively lock ,the frame to the shoes and the shoes to the guides in the lowered position of the shoes and frame.

8. A metal frame for screens having continuous walls provided in one side face with a channel adapted to receive the marginal 10. A metal frame for screens having con-- tinuous walls provided in one side face with a channel adapted to receive the marginal portion of the screen cloth andclamping rod, and a second channel formed alongside the clamping channel whereby to increase the flexibility of the adjacent wall of the first named channel.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

GEORGE H. FORSYTH.

Witnesses:

LEWIS T. GREIsT, L. E. HANNEN.

rod, one wall of the channel hav- I a cloth- 

